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@uitrit titten. @anni @ffice Lie-titers Patent No. 77,776, dated'vll/[ay 12, 1868; 'anteolated'll/Z'ay 1, 1868.

IMPROVEMENT 'in sement-MACHINES.

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To ALL WHOM 1T MAY CQNCERN:

Be it known thatv we, GEORGE W. Sournwrclr and JonMH. GILLETT, of the town of Scott, in'the' county. of Cortland, andin the State of New York, haveinvented certain new and useful Improvernents in Shingle-Machines; and ydo hereby declare that the 'following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the lottersof reference marked' thereon.

In the'annexed drawings, inaking part of this specification, A represents the franse of the machine, which- S provided with three uprights4 or stada1ds,yyy, for supportingltbe shaftsu. and w, and also4 withtwo V-shaped. ways, 'B B, placed parallel to eachother, a suitable distance apart, for the carriage 'to move upon. C represents the carriage, whiehhas grooves upon its under side, to t upon the waysB B, and has also two rack-bars by the sideofthese grooves, the teeth of which extend downward.

' shaft,.^m, liesI erosswsefof theframe A, having'its bearings inA said frame, and provided ynear each end Awitlra. pinion, which'- gears introl the rack-barsof the carriage. 'The revolving of this shaft m with its pinions 'causesithze carriage to nieve backwards-andforwards upon the frame, as will be described. Placedl within thecarriage is a. frame,vwithheadblock lfor'holding the. blocks of which the shingles are to be sawed. AThis frame 'slides orosswise-of the'carriage, upon suitable ways, .made tn support it, and is provided at each ond with the 'oars' E, which-have ratchet-teeth-upontheir under and upper sides, as seen..v These bars E are operated by' the dogs 1I, there being'- two dogs to'feach. bar, one operating on, the under, and the' other upon theupper ratchet, with their'loosee'nds. Their other ends arepivo'ted to each end of a bnr, J.V l Thevbar J ispivoted at its centre, and, oscillating, .causes the dogs I I to operate l:alternately upon the ratchet-bars E. An arm,`K, is secured to bar J at its centre, and serves to oscillate it, These bars K nre secured in the end-pees M of the ways F F, between which the frame D slides, and are provided at their ends with ka slot,"as seen, into whichpnsscs a pin, which said pin passes through standard of the carriage. I

The ways F are` connected at their rear ends by across-piece, inwhich are two pins, S These pins play through the inclined grooves P P, ina bar, N. A lever, g, gives, through its 'connection R, an endwise movement to barN,which causes the pins .S S to slide up the-inclined'groovos P P, and thus elevate slightly the bur connecting the 'two' ways F. The upward movement of this bar causes the bar il; through its arm K, to oscillate, and thus cause the dog-sl I to movefthe rack-barsE'. These rack-barsbeing connected to the` head-blocks which carry the shngle-blocks, said blocks are thus moved up to the saw. A

The rising-and falling of the bar, in which thepins S S are secured, cause both of the dogs I to operato on the under and upper sides of the bars Ef l Y l v Y G represents a shaft, which lies longitudinally ofthe carriage, and which is partially rotated backwards and forwardsby a lever, 7L. vNear each end of this shaft 4is secured an arin, H, in which are fixed' pins a a, which serve to separate, when desirable, thodogs I Lto keep them from catching in the bars-E.-

T represents the saw,v andf'A thesawshafg which hasitlsvbearings in the frame A.

l U and W represent shafts, which haveltheir "bearings in the standardsY. Shaft has at one end a small drum, z', froui'which a' band passes to pulley" or-druin m, onthe-shaftlm, whichirnoves the carriage. Shaft W has on one end a drum,'V, which has a recess 'lorrned in one face, leaving a rim, ci, at its periphery, and at-its centre a small drum or 'pnlly,e.l 'A roller, g, on one end of'shai't U, lies in the recess 'of pulley V, between the pulley c and the rim d. I

frepresents a lever-handle, which is connected at one end to thcshaft on.

VWhen the handlef presses 'the' rollerg against' the pulleyr e, the shaft m rnoves in one direction, but when` it presses it against tho rim'd, it'x'evolves'inau opposite direction. lThus the operator, by moving the handlef vup 'or dow'n, can cause the carriage, through its connections with this handle and'therollerl or pulleyic, to'

move either-toward thc saw or from it, moving said carriage backward or forward at will by the same lever.

The shingle-blocks are movedtoward the saw, by mean's of lever q, as has been described.

Having thus fully described'our i'nveution, what we claim as new, and desire to secure by Letters Paten t, is The arrangement of the bar N, with its grooves P P, through which pass the pins S S, said bar being oper utod by the lever g for oscillating the bur J through its. arm K, substantially as :ind for the purposes specified.

In testimony that We claim the foregoing, we have hereunto set our hands, this 31st day. of August, 1867.

.GEORGE W. SOUTHWICK,

JOHN H. GILLETT.

Witnesses HARVEY ANTHONY, J. E.j Bscocx. 

